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5.8 (a) Contrast in radiograph from one direction of

        projection is due to total summed of different at-
        tenuation coefficient values for each segment.
        (b) Contrast in tomogram (tomography image)
        is directly related with the attenuation coefficient

      values. . . . . . . . . . . . . . . . . . . . 108
5.9 Jet wing is under neutron radiography inspection

        in McCellan 2 MW Reactor [Stewart and Her-

      itage, 1982a]. . . . . . . . . . . . . . . . . 109
5.10 Wing of jet is under neutron radiography inspec-

        tion in McCellan 2 MW Reactor [Stewart and Her-

      itage, 1982b]. . . . . . . . . . . . . . . . . 110
5.11 Wing of jet is under neutron radiography inspec-

      tion in McCellan 2 MW Reactor [Larche, 2013]. . 111
5.12 Egyptian ancient pottery ready for tomography

        scanning at ETRR-2 research reactor in Egypt.

      [Mongy, 2016]. . . . . . . . . . . . . . . . . 112
5.13 Three dimensional slices of computed tomogra-

        phy images of egyptian ancient pottery [Mongy,

      2016]. . . . . . . . . . . . . . . . . . . . . 113
5.14 Tomography image of mummified fish recorded

      at ETRR-2 research reactor [Mongy, 2016]. . . 114
5.15 Metal pitcher model made in 1067 collected at

      Aieta in Argentina [Marin, 2016]. . . . . . . . . 114

6.1 Illustration showing the neutron detector
      and detection approach when to mea-
      sure neutron in different energy ranges. 122

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